Search PubMed⌕ Search

Biomedical subjects

J A Haller

Publications and source records attributed to J A Haller.

At least 163 records · Page 9Linked to original sources
PubMed1976

Continuous dynamic monitoring of pressure and flow patterns during assisted ventilation.

A system for continuous, dynamic monitoring of children requiring ventilatory assistance has been developed and used in a critical care setting. Breath by breath airway pressure changes are measured on a specially adapted meter with high-and low-pressure limit alarms, and are displayed graphically on a bedside oscilloscope. This system has proved to be beneficial in detecting ventilator system malfunction; in adjusting ventilator settings, such as inspiratory/expiratory ratios, end-expiratory pressure, and phase duration and flow ratios; in assessing compliance of a child requiring ventilatory assistance and his capability for spontaneous breathing; and in the early recognition of potentially harmful problems attendant upon assisted ventilation. The system provides additional educational benefit for the I.C.U. personnel, who become more knowledgeable regarding ventilatory problems, and more apt to discover them promptly. The simplicity of the system, compatibility with other I.C.U. monitoring equipment, capability for continuous, dynamic monitoring, and broad scope recommended it for infants and children requiring assisted ventilation.

Child↗
PubMed1976

Special problems of vascular injuries in children.

Vascular injuries in children are not rare. The rising incidence of general trauma in children and the frequent use of diagnostic procedures in this age group may contribute to an overall increase in these injuries. A 10-year experience with severe vascular injuries in children at The Johns Hopkins Hospital has been reviewed. The mechanisms of production may be similar to those in adults, but many injuries are unique to the pediatric age group. The sequelae of such injuries in infants and children may include abnormal growth and development of the involved extremity. Complications and special surgical management of our group of 71 children have been discussed and preventive measures have been suggested.

Blood Vessel Prosthesis↗
PubMed1976

Spontaneous rupture of the stomach in the newborn: clinical and experimental evaluation.

Our study presents an experimental model for studying gastric rupture in the newborn. We showed that gastric rupture could be produced in eight newborn rodents and in three puppies less than 10 days old after injection of 120 ml air at 100 mm Hg pressure in the rodents and 175 ml air at 240 mm Hg pressure in the puppies. Gastric rupture occurred with animals supine and with approximately 20 ml barium injected into the stomach. Positioning of the animal in the supine position permitted the barium to pool in the antral-pyloric region of the stomach.

Age Factors↗
PubMed1976

The syndrome of bronchial atresia or stenosis with mucocele and focal hyperinflation of the lung.

Three cases of "the syndrome of bronchial atresia or stenosis with mucocele and focal hyperinflation of the lung" are added to 28 proven cases (26 with atresia and 2 with stenosis) previously reported in the English literature. One case is of particular interest since serial roentgenograms during the first week of life showed fetal lung fluid to be trapped distal to the atresia. The radiographic findings in this syndrome are reviewed and the presumed etiology and pathophysiology discussed.

Body Fluids↗
PubMed1975

Life-threatening respiratory distress from mediastinal masses in infants.

From 1972 through 1974, 5 infants with severe respiratory distress secondary to mediastinal tumors were treated in the Division of Pediatric Surgery of The Johns Hopkins thospital; The mediastinal masses included 2 intramural bronchial cysts, a giant esophageal duplication, a benign teratoma, and a highly malignant neuroblastomamindividualized management was carried out successfully in all: total resection of the bronchial cysts and teratoma; partial resection of the duplication cyst with stripping of the remaining mucosa from the contiguous esophageal wall, thereby preserving esophageal integrity; and excision of involved chest wall and tumor combined with radiotherapy and chemotherapy for the neuroblastoma. This experience emphasizes the potential for lethal respiratory distress from mediastinal tumors in infants and supports the experience reported by others of serious consequences if resection is not performed. Primary physicians and thoracic surgeons must be aware of the lethal potential of such mediastinal tumors among the many other "surgical" causes of respiratory distress in neonates and infants.

Bronchial Diseases↗
PubMed1975

Acute renal failure: an important complication of cardiac surgery in infants.

Acute renal failure occurred in association with cardiac surgery in 20 of 248 infants (8%). Hypotension, poor tissue perfusion, and hypoglycemia were the most important factors recognized in the pathogenesis and outcome of the ARF. However, many infants were extremely ill preoperatively. The most frequent operative procedures performed in the 20 patients were open-heart surgery with total correction under deep hypothermia and repair of coarctation of the aorta. Thirteen of the 20 infants with ARF died. The combination of a major operative procedure, cardiac failure, hypoglycemia, hypotension, and compromised renal function imposes important constraints in the treatment of hyperkalemia, hypoglycemia, correction of acid-base distrubances, and the administration of fluids.

Acute Kidney Injury↗